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Metadata: Inshore longline fisheries in the Southern North Sea 2019/20 - Fisheries Science Partnership
Abstract:
This work was carried out as part of the Fisheries Science Partnership (FSP) programme. The overall aims of this project were to examine i) the seasonal catch rates of fish taken in the southern North Sea demersal longline fishery; ii) catch composition of all discarded and retained fish; iii) vitality of commercially important skate and ray species, focusing on thornback ray Rajaclavata; iv) post-release behaviour and discard survival of discarded thornback ray through an electronic tagging programme. On each occasion longlines were deployed, the positional information, soak times, and number of hooks/baths were recorded, and for all species of fish length distribution data were taken. For electronically tagged fish the release date, release position and individual length, wing width, sex and maturity were recorded.
Data holder:
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS)
| Other details | ||
| Internal code | Internally assigned metadata identifier | 10276 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | Inshore longline fisheries in the Southern North Sea 2019/20 - Fisheries Science Partnership |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | FSP Report 63 Inshore Longline Survey 2019/2020 |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | CEFAS95e3e817-f0c8-480e-8ca3-b8693b00ebc8 |
| Resource Identifier | This is the code assigned by the data owner. | CEFAS20925 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2019-08-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2020-01-31 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | This work was carried out as part of the Fisheries Science Partnership (FSP) programme. The overall aims of this project were to examine i) the seasonal catch rates of fish taken in the southern North Sea demersal longline fishery; ii) catch composition of all discarded and retained fish; iii) vitality of commercially important skate and ray species, focusing on thornback ray Rajaclavata; iv) post-release behaviour and discard survival of discarded thornback ray through an electronic tagging programme. On each occasion longlines were deployed, the positional information, soak times, and number of hooks/baths were recorded, and for all species of fish length distribution data were taken. For electronically tagged fish the release date, release position and individual length, wing width, sex and maturity were recorded. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Three inshore longline surveys were successfully completed, each consisting of three days, and fishing at six locations, undertaken seasonally (August 2019, November 2019 and January 2020). In each location, a line comprising three sets of lines (“baths”) were deployed, with ca. 600 No 7 J-hooks in total. Whilst the number of “baths” deployed was less than the ‘normal’ commercial fishing activity (ca. 8 baths), it allowed for a higher number of locations to be chosen and covered per survey, and still allowed typical commercial fishing operations to be undertaken. All fish species brought onboard were recorded in terms of their total length (measured to the cm below), sex and maturity. For male skate and shark species encountered (with the exception of lesser-spotted dogfish), maturity was further discriminated as these species could be externally assessed. Additional wing width measurements (measured to the cm below), were also recorded for all skate species. Further data collection included whether the fish would refer to the retained or discarded component part of the catch. A random subsample of the retained and discarded thornback ray were further assessed in terms of health condition and vitality. A sub-sample of the thornback ray were tagged electronically with data storage tags (DST) to further infer on the post-release survival after capture by longline. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fish |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Fisheries | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Biota abundance, biomass and diversity | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Species distribution | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Water column | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | data.gov.uk | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 52.25 |
| East | The eastern-most limit of the data resource in decimal degrees | 2 |
| South | The southern-most limit of the data resource in decimal degrees | 51.5 |
| West | The western-most limit of the data resource in decimal degrees | 0.5 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| Delivery point | Cefas Lowestoft Laboratory, Pakefield Road | |
| Postal code | NR33 0HT | |
| City | Lowestoft | |
| Administrative area | Suffolk | |
| Country | UK | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS) | |
| data.manager@cefas.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | Department for Environment, Food and Rural Affairs (DEFRA) | |
| defra.helpline@defra.gov.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://data.cefas.co.uk/view/20925 |
| Locator name | Name of the web resource | Cefas Data Portal |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | noLimitations | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | http://www.nationalarchives.gov.uk/doc/open-government-licence/ | |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2020-12-01 |
| Date of last revision | The most recent date that the resource was revised. | 2021-12-16 |
| Date of creation | The date that the resource was created. | 2020-11-16 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2021-12-16 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.1 |